package com.mmall.util;

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author sunqy
 * @create 2019/9/19
 */
@Slf4j
public class CookieUtil {
    private final static String COOKIE_DOMAIN = ".tomcat.imooc.com";
    private final static String COOKIE_NAME = "mmall_login_token";

    public static String readLoginToken(HttpServletRequest request){
        Cookie[] cks = request.getCookies();
        if (cks != null){
            for (Cookie ck: cks){
                log.info("read cookieName:{},cookieValue:{}",ck.getName(),ck.getValue());
                if (StringUtils.equals(ck.getName(),COOKIE_NAME)){
                    log.info("return cookieName:{},cookieValue:{}",ck.getName(),ck.getValue());
                    return ck.getValue();
                }
            }
        }
        return null;
    }

    public static void writeLoginToken(HttpServletResponse response, String token){
        Cookie cookie = new Cookie(COOKIE_NAME,token);
        cookie.setDomain(COOKIE_DOMAIN);
        cookie.setPath("/");//代表设置在根目录
        cookie.setHttpOnly(true);
        //如果这个maxage不设置的话，cookie就不会写入硬盘，而是写在内存，只在当前页面有效
        cookie.setMaxAge(60*60*24*365);//如果是-1代表永久
        log.info("write cookieName:{},cookieValue:{}",cookie.getName(),cookie.getValue());
        response.addCookie(cookie);
        System.out.println("111");
    }

    public static void dellLoginToken(HttpServletRequest request,HttpServletResponse response){
        Cookie[] cks = request.getCookies();
        if (cks != null){
            for (Cookie ck : cks){
                if (StringUtils.equals(ck.getName(),COOKIE_NAME)){
                    ck.setDomain(COOKIE_DOMAIN);
                    ck.setPath("/");
                    ck.setMaxAge(0);//设置成0，代表删除此cookie
                    log.info("del cookieName:{},cookieValue:{}",ck.getName(),ck.getValue());
                    response.addCookie(ck);
                    return;
                }
            }
        }
    }
}
